{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "11.1.1"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "e2b136e9eab7d571cb4a680ec10361ddc70fd573"
            },
            {
              "fixed": "37b4c06b145c7bfd6bc2a6df5d0a12c56b15ef60"
            }
          ],
          "repo": "https://github.com/kjur/jsrsasign",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "Versions of the package jsrsasign before 11.1.1 are vulnerable to Improper Verification of Cryptographic Signature via the DSA domain-parameter validation in KJUR.crypto.DSA.setPublic (and the related DSA/X509 verification flow in src/dsa-2.0.js). An attacker can forge DSA signatures or X.509 certificates that X509.verifySignature() accepts by supplying malicious domain parameters such as g=1, y=1, and a fixed r=1, which make the verification equation true for any hash.",
  "id": "CVE-2026-4600",
  "modified": "2026-04-01T23:10:30.938035272Z",
  "published": "2026-03-23T06:16:21.697Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370940"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/Kr0emer/bf15ddc097176e951659a24a8e9002a7"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kjur/jsrsasign/commit/37b4c06b145c7bfd6bc2a6df5d0a12c56b15ef60"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kjur/jsrsasign/pull/646"
    }
  ],
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}